Currently all photography-as-art books are at Perkins Library for the duration of the Lilly renovation.
Catalogues Raisonnés
"All the works of an artist (or in this case, photographer)". A scholar or a group of scholars documents every work of an artist's career. Each work is pictured with scholarly opinions, provenance (where the work has been), and literature. The first place to start when researching an artist or individual work. Not all artists have catalogues raisonnés.
Mapplethorpe [interactive multimedia] : the catalogue raisonné. by Mapplethorpe, Robert. (Alameda, CA : Digital Collections, Inc, c1996.) CD-ROM C49
Edward Weston, his life and photographs : the definitive volume of his photographic work.
illustrated biography by Ben Maddow ; afterword by Cole Weston. Millerton, N.Y. Aperture, c1979. Lilly Locked Stacks TR653 .W457 1979
Permanent Holdings Catalogs (of museums)
Detailed catalogs of a period or genre of art in a particular museum. Like a catalogue raisonné, it will contain a collection of scholar's opinion on an object, conservation reports, provenance and literature (written about it). If you know of the location of a work of art, check for permanent holdings catalogs.
Alfred Stieglitz : the key set : the Alfred Stieglitz collection of photographs / Sarah Greenough. Reff. Washington, D.C. : National Gallery of Art ; New York : Harry N. Abrams, 2002.